What are the example of molecule ?​

Answers

Answer 1

Explanation:

H2O water molecule

O3 Ozone

Answer 2
h2o n2o3c6h12o3

are some of common example of molecules


Related Questions

Which statement describes the law of conservation of energy?
All systems will exchange matter and energy with their surroundings.
All systems can exchange energy, but not matter, with their surroundings.
Energy cannot be created nor destroyed, but it changes from one form to another.
Energy is destroyed in most chemical reactions when new products are formed.

Answers

Answer:

All systems will exchange matter and energy with their surroundings.

Explanation:

Answer:c

Explanation:

Are you ready kids?

Aye, aye Captain.

I can't hear you!

AYE, AYE CAPTAIN!

Oooooooooh.

Who lives in a pineapple under the sea?

Spongebob squarepants!

Absorbent and yellow and porous is he?

Spongebob squarepants!

If nautical nonsense be something you wish!

Spongebob squarepants!

Then drop on the deck and flop like a fish!

Spongebob squarepants!

Ready?

Spongebob squarepants.

Spongebob squarepants.

Spongebob squarepants.

Spongebob squarepants.

Spongebob-squarepants.

What are the top three sources of US electricity generation?

Answers

The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources.

Which of the following should NOT be used to hold chemicals while they are being heated?

Question 5 options:

test tube


weigh boat


beaker


crucible

Answers

Answer: Weigh boat

Explanation:

they are disposable and will likely melt

Weigh boat among the following  should not be used to hold chemicals while they are being heated ,therefore option (b) is correct.

What do you mean by weigh boats ?

Weigh boats are ideal for general-purpose weighing, evaporating, dispensing, and storing applications. Compatible with balances and dryers, these pans support precise measurements.

A weigh boat is an open container often used in chemistry and bio chemistry. It is used if you want to weigh a sample very accurately.

A weigh boat is an object that is used to protect your balance from any object you want to weigh.

Weigh boat among the following  should not be used to hold chemicals while they are being heated ,hence option (b) is correct.

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In ionic bonding Question 41 options: the electrons are shared between the atoms. the process of forming an ionic bond is highly endothermic overall. the bonding that occurs is usually between two nonmetal atoms. a noble gas configuration is formed for each element or ion. At least two of the above statements are correct.

Answers

Answer: In ionic bonding (a noble gas configuration is formed for each element or ion).

Explanation:

IONIC bonding, which is also called electrovalent bonding involves the complete transfer of electrons from one atom to another in order to attain a noble gas electron configuration.

The noble gases or group 0 elements have a completely filled outermost shell of eight electrons. This makes them generally very stable, that is, unreactive. There is a natural drive for other atoms to attain the electron configuration of group 0 (inert gases) elements. This usually results in atoms entering into chemical combinations by losing, gaining or sharing electrons.

Ionia compound such as sodium chloride

--> have high melting points because alot of heat energy is required to break the attractive forces between the ions;

--> are hard and brittle;

--> are soluble in water;

--> conduct electricity when in solution or molten form because the ions are able to move about, that is, they are electrolytes

Magicians often use ‘flash powder’ in their acts. Flash powder contains 69.0% potassium chlorate (31.9% K, 28.9% Cl, 39.2% O) and the remainder is aluminium. Calculate the percentage composition by mass of each element in flash powder

Answers

Answer:

[tex]\rm K[/tex]: approximately [tex]22.0\%[/tex].

[tex]\rm Cl[/tex]: approximately [tex]19.9\%[/tex].

[tex]\rm O[/tex]: approximately [tex]27.0\%[/tex].

[tex]\rm Al[/tex]: [tex]31.0\%[/tex].

Explanation:

Consider a [tex]100\; \rm g[/tex] sample. There would be [tex]69.0\% \times 100\; \rm g = 69.0\; \rm g[/tex] of [tex]\rm KClO_{3}[/tex] and [tex]100.0\; \rm g - 69.0\; \rm g = 31.0\; \rm g[/tex] of [tex]\rm Al[/tex].

Out of that [tex]69.0\; \rm g[/tex] of [tex]\rm KClO_{3}[/tex]:

[tex]31.9\%[/tex] (by mass) would be [tex]\rm K[/tex]: [tex]31.9\% \times 69.0\; \rm g \approx 22.0\; \rm g[/tex].

[tex]28.9\%[/tex] (by mass) would be [tex]\rm Cl[/tex]: [tex]28.9\% \times 69.0\; \rm g \approx 19.9\; \rm g[/tex].

[tex]39.2\%[/tex] (by mass) would be [tex]\rm O[/tex]: [tex]39.2\% \times 69.0\; \rm g \approx 27.0\; \rm g[/tex].

Overall, the composition (by mass) of each element in this mixture would be:

[tex]\rm K[/tex]:

[tex]\begin{aligned} & \frac{31.9\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 31.9\% \times 69.0\% \\ \approx \; & 22.0\%\end{aligned}[/tex].

[tex]\rm Cl[/tex]:

[tex]\begin{aligned} & \frac{28.9\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 28.9\% \times 69.0\% \\ \approx \; & 19.9\%\end{aligned}[/tex].

[tex]\rm O[/tex]:

[tex]\begin{aligned} & \frac{39.2\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 39.2\% \times 69.0\% \\ \approx \; & 27.0\%\end{aligned}[/tex].

[tex]\rm Al[/tex]:

[tex]\begin{aligned}& \frac{100\; \rm g - 69.0\; \rm g}{100\; \rm g} \\ =\; & 100\% - 69.0\% \\ =\; & 31.0\%\end{aligned}[/tex].

cual es la importancia de los solidos en la vida ?

Answers

Answer:

La comida es un sólido y no podemos vivir sin comida. Algunos sólidos son buenos conductores de calor y electricidad; otros son aislantes. Los sólidos se utilizan todos los días en la vida.

The graph below shows how solubility changes with temperature.

A graph with the horizontal axis showing temperature ranging from 0 to 10 in units of 10 and the vertical axis solubility in grams of salt per 100 grams of water. Several compounds are shown. All data are approximate. The substances and their coordinates are as follows: upper N a upper C l: 0, 38; 10, 38; 20, 38; 30, 38; 40, 39; 50, 39; 60, 39; 70, 40; 80, 40; 90, 40; 100, 40. Upper N a subscript 2 upper H upper A s upper O subscript 4: 0, 5; 10, 18; 20, 28; 30, 39; 40, 49; 60, 65; 80, 82. Upper B a (upper N upper O subscript 3) subscript 2: 0, 5; 10, 8; 30, 12; 40, 15; 50, 18; 60, 20; 80, 28; 100, 33. Upper N a subscript 2 upper S upper O subscript 4: 0, 5; 5, 8; 10, 10; 15, 15; 20, 20; 25, 20; 28, 35; 30, 40; 32, 49; 33, 50; 35, 50; 40, 48; 50, 47; 60, 46; 70, 45; 80, 43; 90, 32; 100, 40. Upper C 3 subscript 2 (upper S upper O subscript 4) subscript 3 dot 9 upper H subscript 2 upper O: 0, 18; 20, 10; 30, 8; 50, 5; 60, 3; 80, 1; 100, 0.

How many grams of NaCl will be needed to form 600 mL of a saturated solution at 100°C?
15 g
24 g
40 g
240 g
answer 240g

Answers

The amount of NaCl required to prepare a 600 mL saturated solution depends on the solubility at the temperature.

What is solubility?

Solubility is the amount of solute that dissolves in a given volume of solvent.

Solubility = amount of solute/volume of solvent o

Solutions may be saturated, unsaturated, super saturated solution.

For solutes, the solubility increases with increase in temperature.

The amount of NaCl required to prepare a 600 mL saturated solution depends on the solubility at the temperature.

Learn more about solubility at: https://brainly.com/question/23946616

Answer:

240

Explanation:

Unknown # 21

Flame Test Color: Lilac
Addition of HCl(aq)= NR (No Reaction)
Addition of HCl(aq) and BaCl2(aq)= White precipitate
Addition of HNO3(aq) and AgNO3(aq)= NR (No Reaction)

What is the unknown ionic compund molecular formula?

Answers

Answer is option B
Addictive and always Agn02

what is electronic configuration?​

Answers

Answer:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

Electronic configuration is defined as the distribution of electrons into the orbitals of an atom. Every neutral atom consists of a fixed number of electrons which is equal to the number of protons and is called the atomic number.

A place where animals are protected in their natural habitat is called ------------------

Answers

answer is wildlife sanctuary

Answer:

a wildlife sanctuary

Explanation:

7.95x10 converted to the number is

Answers

7.95 × 10

= 79.5

This is the answer

How many Sodium (NA) Atoms are in Methylene?​

Answers

Answer:

No Sodium(Na) in methylene

Explanation:

Methylene is an organic compound

if 1.35 g of aluminum occupies 0.500 cm^3. what is the density of aluminum

Answers

Answer:

2.7

Explanation:

Density= mass/volume

= 1.35/0.500

= 2.7

Can you tell me name of chemicals in sea Please?​

Answers

this is my attachment answer hope it's helpful to you

Match each step of the scientific method with its matching example.

Match Term Definition
A) The growth of green algae is recorded every day for several weeks and compared
B) The data recorded in the experiment supports the hypothesis about how algae reproduce.
C) Based on what other scientists have done, algae life cycles are affected by light.
D) Under the same temperature and water conditions, green algae is grown under natural light, blue light, and green light.

Experiment
Conclusion
Research
Analysis

Answers

Answer: I did the quiz and got it correct

Explanation:  

Biosphere- B  

Ecosystem- C  

Biome- D  

Habitat- A

Scientific Method

What is Scientific Method

A method or procedure that consists of systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

Experiment- The growth of green algae is recorded every day for several weeks and compared

Conclusion- Under the same temperature and water conditions, green algae is grown under natural light, blue light, and green light.

Research-Based on what other scientists have done, algae life cycles are affected by light.

Analysis- The data recorded in the experiment supports the hypothesis about how algae reproduce.

For more information visit

https://brainly.com/question/497944

Can someone help me please

Answers

Maybe evolution I don’t know what asexual reproduction is.

1. what is hard water.
2. Mention four sources of water.
3. write down the chemical formula of water.
4. What is purification of water.
5. Mention two importance of purification of water.
6. Mention 4 method used ot purify water. 7. Mention 4 impurities found in water.
8. Explain the term contaminated of water.
9. State two physical properties of water. 10. mention the names of of the elements that causes hardness in water.​

Answers

Answer:

Oh man, the questions are much

Explanation:

1. Hard water is water what has high mineral content. (I can't go into details )

2. River, reservoir, Lake, groundwater, rain

3. H2O

4. POW is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from water.

5. Reduces amount of chlorine, soil residue, and organic and inorganic substances. Helps in improving the taste. Smell and visual appearance of water.

6. Boiling, filtration, distillation, and chlorination

7. Dust, dirt, harmful chemicals, biological contaminants, radiological contaminants

8. It is the contamination of water bodies, usually as a result of human activities, in such a manner that negatively affects it legitimate uses.

9. Colorless, turbidity, taste And odor.

10. Hardness of water is caused by compounds of calcium and magnesium, and by a variety of other metals.

need help asap!!!!!!!!!

Answers

Answer:

c. 2 and 3 only

Explanation:

When you compact the bag of trash you make it smaller, so the volume changes. And the density is the mass divided by the volume, so as the volume changed the density obligatorily change too

2 and 3 because the the garbage is more dense and together but it is now also taking up a smaller amount of space because it has been crushed. however, it still weighs the same because all of the same materials are there, just taking up a smaller space.

Is it possible to prepare chlorine in lab without application of heat?

Answers

Answer:

i think it will explode

Define symbol and compound with an exomple.​

Answers

Symbol: A symbol is a mark, sign, or word that indicates, signifies, or is understood as representing an idea, object, or relationship. For example, a red octagon is a common symbol for "STOP"; on maps, blue lines often represent rivers; and a red rose often symbolizes love and compassion.

Compound: a thing that is composed of two or more separate elements; a mixture.
For Example: water (H2O), salt (sodium chloride, NaCl), methane (CH4).

10. Fuel oil, gasoline, kerosene and naphtha are four fractions obtained from the fractional
distillation of petroleum.
What is the order of the boiling points of these fractions?

Answers

Answer:

option b

Explanation:

answer from gauth math

Type the correct answer in the box. Express your answer to two significant figures. You are performing a reaction with 1.7 moles of hydroiodic acid and 3.43 moles of zinc bromide: 2HI + ZnBr2 → 2HBr + ZnI2. How many moles of zinc iodide can be made? The theoretical yield is moles of zinc iodide.

Answers

Answer:

1.34 34343 he did

Explanation:

i did the test

Answer:

0.85

Explanation:

True or False: All material has the same density.

Answers

Answer:

Different materials have different densities. So it is False

Answer:

The answer is False

What is required for dynamic equilibrium?
A. A closed system.
B. The forward and backward reactions occur under the same conditions.
C. A reversible reaction.
D. All of these

Answers

Answer:

A. all of them

Explanation: Edtell

In an exothermic reaction, heat is
released into the surroundings. How does this affect entropy?
particles in the surroundings move slower and have decreased entropy.
• B. The particles in the surroundings move faster and have increased entropy.
•C. The particles in the surroundings move
surroundings move slower and have increased entropy.
• D. The entropy is not affected by this.

Answers

Answer:

B. the particles in the surroundings move faster and have increased entropy

Explanation:

An exothermic process releases heat, causing the temperatures of the surroundings to increase. Entropy increases as temperature increases. Since an exothermic reaction releases heat to the surroundings, molecules in the surroundings will begin to move faster because they will absorb more energy, which increases their kinetic energy. An increase in temperatures means that the particles of the surroundings have greater kinetic energy. The faster moving particals have more disorder than particles that are moving more slowly at a lower temperature. Entropy is interpreted as the degree of disorder/randomness.


How many joules of energy are required to melt 125 g of water?

Answers

Answer for this question is 45,000

Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one form to another and then use it to accomplish tasks, making modern civilization possible.

Explain about the energy?

Energy is the ability to do tasks. It can exist in various forms, including potential, kinetic, thermal, electrical, chemical, and nuclear.

Energy can take on a variety of shapes. Examples of these include: electrical energy, sound energy, chemical energy, nuclear or atomic energy, light energy, heat energy, mechanical energy, gravitational energy, and so on. Each form has the ability to shift or transform into the others.

The sun is one of the most significant energy sources. Most of the energy on earth comes from the sun, which is where it all began. We get

Answer for this question is 45,000

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Which of the following would not be considered matter?
clouds
trees
rain
air
light

Answers

Answer:

light

Explanation:

Have a nice day

Answer:

light

Explanation:

Bài 19 với ạ, ai giúp em với ❤️❤️❤️❤️❤️

Answers

Answer:

we're are u from

Explanation:

also the writing from that paper look really cool

A student conducts an experiment to determine how the temperature of water affects the time for sugar to dissolve. In each trial, the student uses a different amount of water and a different temperature of water. What is wrong with this experimental design? A.The student changed more than one independent variable. B.The student did not change enough independent variables. C.The student needs to perform more trials. D.The student does not have a dependent variable.

Answers

What is wrong with the experimental design is that the student changed more than one independent variable.

WHAT AN EXPERIMENT SHOULD CONTAIN?

An experiment is a procedural method of solving a scientific problem or answering a scientific question. An ideal experiment should contain two variables namely: independent variable and dependent variable.

Dependent variable: This is the variable that the experimenter measures in the experiment. The dependent variable responds to changes made to the independent variable.

Independent variable: This is the variable that is manipulated in an experiment in order to bring about a response.

In the experiment conducted by the student in this question in order to determine how the temperature of water affects the time for sugar to dissolve. The independent variable is the DIFFERENT TEMPERATURE OF WATER while the dependent variable is the TIME TAKEN FOR SUGAR TO DISSOLVE.

N.B: An experiment should have only one independent variable and all other variables should be kept constant. This is to have a reliable result.

However, this student used two independent variables (temperature and amount of water) for the experiment, which is wrong for the experimental design.

Therefore, the fact that the student changed more than one independent variable is wrong for the experimental design.

Learn more: https://brainly.com/question/967776

Answer:

The student changed too many variables.

Explanation:

in k-12 took the quiz

Am I correct?

(Plz don’t used this for points or typing random things…plz don’t)

Answers

Answer and Explanation:

The answers would be:

A. Domestic cats live in about 34% of homes in the United States. (Statistical statements are, most of the time, facts and not an opinion)

C. Modern domestic cats are closely related to Near Eastern wildcats. (Fact)

D. Cats eat rodents that can spread disease. (Fact)

The above statements are facts because they don't make a judgement or show a position on the topic, only show what is known and proven to be true.

B and E are incorrect because they take a side of the topic, in which someone else might disagree with the opinion. These opinions aren't proven to be true.

#teamtrees #PAW (Plant And Water)

I hope this helps!

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